scholarly journals Prognostics and Health Management of Renewable Energy Systems: State of the Art Review, Challenges, and Trends

Electronics ◽  
2021 ◽  
Vol 10 (22) ◽  
pp. 2732
Author(s):  
Lotfi Saidi ◽  
Mohamed Benbouzid
Keyword(s):  
Renewable Energy ◽  
Wind Turbine ◽  
High Speed ◽  
Health Management ◽  
Energy Systems ◽  
Power Converter ◽  
Remaining Useful Life ◽  
Renewable Energy Systems ◽  
Capacity Degradation ◽  
Battery Capacity

The purpose of this study is to highlight approaches for predicting a system’s future behavior and estimating its remaining useful life (RUL) to define an effective maintenance schedule. Indeed, prognosis and health management (PHM) strategies for renewable energy systems, with a focus on wind turbine generators, are given, as well as publications published in the recent ten years. As a result, some prognostic applications in renewable energy systems are emphasized, such as power converter devices, battery capacity degradation, and damage in wind turbine high-speed shaft bearings. The paper not only focuses on the methodologies adopted during the early research in the area of PHM but also investigates more current challenges and trends in this domain

Structural and Kinematic Features of a 2 DOF Speed Increaser for Renewable Energy Systems

2016 ◽  
Vol 823 ◽  
pp. 367-372 ◽  
Author(s):  
Radu Saulescu ◽  
Codruta Jaliu ◽  
Mircea Neagoe
Keyword(s):  
Renewable Energy ◽  
Energy Conversion ◽  
Wind Turbine ◽  
Energy Systems ◽  
Energy Conversion Efficiency ◽  
Renewable Energy Systems ◽  
Wind Energy Conversion ◽  
Rotating Systems ◽  
Differential Transmission ◽  
Novel Concept

The counter-rotating wind turbine is a relatively new concept of wind converter that contains two rotors placed on the same side or on both sides of the nacelle with the aim of increasing the wind energy conversion efficiency. As the rotors are rotating at a lower speed than the generator requires, the wind turbine usually contains a speed increaser to harmonize their running regimes. Similar counter-rotating systems are approached for hydro applications but they are still in the research phase.The paper proposes a novel concept of a 2 DOF speed increaser to be used in counter-rotating systems (wind or hydro). The structural and kinematic features of the 1 DOF and 2 DOF transmission running cases are presented in the paper. The differential transmission is further analyzed and the transmission functions and efficiency are established. Finally, conclusions regarding the use of 2 DOF transmissions in the renewable energy systems are formulated.

Mini Wind Plant to Power Telecommunication Systems: A Case Study in Sicily

2012 ◽  
Vol 622-623 ◽  
pp. 1078-1083 ◽  
Author(s):  
Giuseppina Ciulla ◽  
Vincenzo Franzitta ◽  
Valerio Lo Brano ◽  
Alessia Viola ◽  
Marco Trapanese
Keyword(s):  
Air Pollution ◽  
Renewable Energy ◽  
Low Power ◽  
Wind Turbine ◽  
Energy Systems ◽  
Power Lines ◽  
Renewable Energy Systems ◽  
Telecommunication Systems ◽  
Main City

The ever increasing problems related to air pollution and the difficulties for power lines to reach inaccessible areas are pushing to find new solutions for powering telecommunications equipments (TLC). The renewable energy systems, although relatively expensive, have the required characteristics. The purpose of this work is to find a solution based on a low power wind turbine to serve a real telecommunication site located near Palermo, the main city of Sicily (Italy).

An investigation on wind/PV/fuel cell/battery hybrid renewable energy system for nursing home in Istanbul

2019 ◽  
Vol 233 (5) ◽  
pp. 616-625 ◽  
Author(s):  
Bahtiyar Dursun ◽  
Ercan Aykut
Keyword(s):  
Renewable Energy ◽  
Nursing Home ◽  
Fuel Cell ◽  
Energy Systems ◽  
Power Converter ◽  
Renewable Energy Systems ◽  
Hybrid Renewable Energy Systems ◽  
Hybrid Renewable Energy System ◽  
Cost Of Energy ◽  
Hybrid Renewable Energy

This paper presents a techno-economic analysis of hybrid renewable energy systems to supply the electrical load requirements of the nursing home located in Istanbul, Turkey. The standalone hybrid renewable energy systems (Photovoltaic (PV)/wind/fuel cell/electrolyzer, PV/fuel cell/electrolyzer, and wind/fuel cell/electrolyzer, etc.) considered in the analysis were comprised of different combinations of PV panels, fuel cells, and wind turbines supplemented with hydrogen storage. In this study, the Hybrid Optimization of Multiple Energy Resources (HOMER) software is used as the assessment tool to determine the optimal configuration of hybrid renewable energy systems taking total net present cost and cost of energy into consideration. As a result, it is determined that the optimal system configuration of standalone wind/PV/fuel cell/electrolyzer hybrid renewable energy systems with the lowest total net present cost consists of 30 kW PV panel, 20 kW wind turbine, 20 kW fuel cell, 20 kW power converter, 50 kW electrolyzer, 20 kW rectifier, and 100 kg hydrogen tank. Besides, the net present cost and cost of energy of the optimum configuration are calculated to be $607,298 and $1.306/kWh, respectively. The system is considered as completely renewable. When wind speed and solar radiation values increase, then the cost of energy decrease about $0.979/kWh.

scholarly journals Fault Ride-Through Study and Control of a Wind Turbine Driving Squirrel Cage or Doubly-Fed Induction Generator: A Comparative Study

2018 ◽  
Vol 6 (6) ◽  
Author(s):  
Mahmoud Essam M. Harby ◽  
Aboubakr Salem ◽  
S. E. Elmasry ◽  
Adel El Samahy ◽  
Helmy Elzoghby
Keyword(s):  
Renewable Energy ◽  
Wind Turbine ◽  
Energy Systems ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Renewable Energy Systems ◽  
Squirrel Cage ◽  
Fault Ride Through ◽  
Three Phase ◽  
Doubly Fed

The renewable energy systems are going to take over most of the non-renewable energy systems, so many scientific efforts are being made to ensure the stability and reliability of the renewable energy systems. This paper is concerned about the wind energy systems and ensuring their behavior and performance during and after the abnormalities like fault ride-through. Two complete models of a grid connected wind systems are going to be simulated in the MATLAB software program, the first one will be a grid connected wind turbine driving a three-phase squirrel-cage induction generator (SCIG) and the other model will be a grid connected wind turbine driving a three-phase doubly-fed induction generator (DFIG). The frequency of each system will be displayed and compared to the frequency of the other system upon fault ride-through (three-phase short-circuit fault) and under the effect of the PID controller which is tuned by genetic algorithm technique. The different responses of both generators are going to be analyzed graphically and compared to each other upon the ride-through fault and under the effect of the designed controller (genetic algorithm PID controller). 

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